Grab bar



FIG. 1 is a perspective view of the grab bar.

FIG. 2 is a top view of the grab bar.

FIG. 3 is a bottom view of the grab bar.

FIG. 4 is a front view of the grab bar; the back view is a mirror image; and,

FIG. 5 is a left side view of the grab bar; the right side view is a mirror image.

The broken lines, in dashed form, show portions of the grab bar which form no part of the claimed design. Any unshaded areas, within the oblong regions, form no part of the claimed design. 

CLAIM The ornamental design for a grab bar, as shown and described. 